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Josephine Westermann

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#machine learning Review Oct 2026

Operator Surrogates

This chapter provides a mathematical introduction to operator surrogates, which are finite-parametric maps approximating complex (typically nonlinear) operators between infinite-dimensional spaces, and presents convergence rate bounds for holomorphic operators that depend on the number of trainable parameters and the r...

Christoph Schwab, Josephine Westermann, J. Zech · 1 citation

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